<!DOCTYPE html>

<head>
    <meta charset="utf-8">
    <title>登录确定提醒</title>
    <style>
        html,
        body {
            margin: 0;
            padding: 0;
            font-family: "微软雅黑";
        }

        .wrap-dialog {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            font-size: 16px;
            text-align: center;
            background-color: rgba(0, 0, 0, .7);
            z-index: 999;
        }

        .dialog {
            top: 0;
            left: 0;
            position: relative;
            /*margin: 10% auto;*/
            width: 300px;
            background-color: #FFFFFF;
            border-radius: 2px;
        }

        .dialog .dialog-header {
            height: 20px;
            padding: 10px;
            background-color: #F8F8F8;
            border-bottom: 1px solid #eee;
            text-align: left;
        }

        .dialog-title {
            display: inline-block;
            width: 50px;
            margin-left: 0;
        }

        .dialog .dialog-body {
            height: 30px;
            padding: 20px;
        }

        .dialog .dialog-footer {
            padding: 8px;
            background-color: #f5f5f5;
        }

        .dialog-btn {
            cursor: pointer;
            background: #ff5622;
            border: 1px solid #ff5622;
            border-radius: 2px;
            color: #fff;
            height: 28px;
            line-height: 28px;
            margin: 5px 5px 0;
            padding: 0 25px;

        }

        .dialog-hide {
            display: none;
        }

        .dialog-ml50 {
            margin-left: 50px;
            background: #fcfbfc;
            color: #000;
            border: 1px solid #dedede;
        }

        .closeBtn {
            display: inline-block;
            width: 20px;
            height: 20px;
            padding: 10px;
            line-height: 20px;
            text-align: center;
            /*background: red;*/
            color: #333;
            font-size: 12px;
            float: right;
            cursor: pointer;
            font-weight: bolder;
        }

        .closeBtn:hover {
            color: #A0A8B4;
        }
    </style>
</head>

<body>
    <div class="wrap-dialog dialog-hide" id="dialog-hide">
        <div class="dialog" id="dialog">
            <a class="closeBtn" id="closeBtn">X</a>
            <div class="dialog-header">
                <span class="dialog-title">提示</span>
            </div>
            <div class="dialog-body">
                <span class="dialog-message" id="dialog-message">是否要退出登录？</span>
            </div>
            <div class="dialog-footer">
                <input type="button" class="dialog-btn" id="dialog-confirm" value="是" />
                <input type="button" class="dialog-btn dialog-ml50" id="dialog-cancel" value="否" />
            </div>
        </div>
    </div>

</body>
<script>
    window.onload = function() {
        var choose = function(id) {
            return document.getElementById(id);
        }
        //自定義部分
        window.confirm = function(message, yesCallBack, noCallBack) {

            var message = message || "是否要退出登录?";

            choose("dialog-message").innerHTML = message;
            // 显示遮罩和对话框
            choose("dialog-hide").className = "wrap-dialog";
            // 确定按钮

            choose("dialog").onclick = function(e) {
                if (e.target.className == "dialog-btn") {
                    choose("dialog-hide").className = "wrap-dialog dialog-hide";
                    yesCallBack();
                } else if (e.target.className == "dialog-btn dialog-ml50") {
                    choose("dialog-hide").className = "wrap-dialog dialog-hide";
                    noCallBack();
                }
            };
            // 取消按钮
            choose("closeBtn").onclick = function() {
                choose("dialog-hide").style.display = "none";
            }
        }

        function submitHand() {
            function submitBtn() {
                alert("确定");
            }

            function closeBtn() {
                alert("取消");
            }
            confirm("确认登录？", submitBtn, closeBtn);
        }
        //页面打开自动弹出  
        submitHand();
    }
</script>

</html>